1540s, "to regard," from Middle French respecter "look back; respect; delay," from Latin respectere, frequentative of respicere (see respect (n.). Meaning "treat with deferential regard or esteem" is from 1550s. Sense of "refrain from injuring" is from 1620s. Meaning "have reference to" is from 1560s. Related: Respected; respecting.
To respect the person was "show undue bias toward (or against) based on regard for the outward circumstances of a person;" hence respecter of persons, usually with negative, from Acts x:34, in the 1611 translation.[respect etymology, respect origin, 英语词源]